Heather Graham says playwright Israel Horovitz forced a kiss on her decades ago after she dated his son, Beastie Boys star Adam Horovitz. Graham said on the latest edition of Marc Maron’s “WTF” podcast, which posted Monday, that she dated the younger Horovitz, a.k.a. Ad-Rock, when she was 18 or 19, around the time she appeared in the 1989 Gus Van Sant film “Drugstore Cowboy.”